Mac OS X bug on non english systems
Mac OS X 10.5 (Japanese): Disk Utility "internal error" alert with 7-pass erase or 35-pass erase
Symptoms
In the Japanese language version of Mac OS X 10.5, when performing a Secure Erase (7-pass or 35-pass erase) in Disk Utility, this alert may appear: "Disk Utility internal error. Disk Utility has lost its connection with Disk Management Tool."
Resolution
Change the Mac OS X language version to English before performing the secure erase.
I thought this kind of problem was Mac OS 9/Classic history.